Extra digits may be present as an isolated finding, or they may occur as part of a syndrome, in which case other abnormalities are usually present.
Update Date 8/1/2015
Updated by: Chad Haldeman-Englert, MD, FACMG, Fullerton Genetics Center, Asheville, NC. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.